13.2.2 Graphs of Functions, PT3 Focus Practice

Table below shows the values of two variables, x and y, of a function.

x

–3

–2

–1

0

1

2

3

y

–19

–3

1

–1

–3

1

17

The x-axis and the y-axis are provided on the graph paper on the answer space.

(a)By using a scale of 2 cm to 5 units, complete and label the y-axis.

(b)Based on the table above, plot the points on the graph paper.

(c)Hence, draw the graph of the function.

Answer:

Solution:

Question 5:

Use graph paper to answer this question.

Table below shows the values of two variables, x and y, of a function.

x

–4

–3

–2

–1

0

1

2

y

31

17

7

1

–1

1

7

The x-axis and the y-axis are provided on the graph paper on the answer space.

(a)By using a scale of 2 cm to 5 units, complete and label the y-axis.

(b)Based on the table above, plot the points on the graph paper.

(c)Hence, draw the graph of the function.

Answer:

Solution:

Question 6:(a) Complete table below in the answer space for the equation L = x2 + 5x by writing the value of L when x = 2.
(b) Use graph paper to answer this part of the question. You may use a flexible curve rule.
By using a scale of 2 cm to 1 unit on the x-axis and 2 cm to 5 units on the y-axis, draw the graph of L = x2 + 5x for 0 ≤ x ≤ 4.